1,067 mechanical engineering jobs at 408 companies in Riverside, CA

1mo
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Mechanical Engineering Intern
Akron or Ashtabula or Conroe or Freeport or Houston or The Woodlands or McIntosh or Geismar or Los Angeles
OnsiteInternship, Full Time
Huntsman
HuntsmanNYSE: HUN: Manufactures and markets chemical products for consumer and industrial markets.
Pursuing a bachelor's in Mechanical Engineering, 3.0+ GPA preferred, strong mechanical aptitude and communication, proficiency with Microsoft Office, authorized to work in the U.S. without sponsorship.
Microsoft Office
3w
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Manager, Mechanical Engineering
Pasadena, California, United States
$142k-$189k/yr OnsiteFull Time
Rocket Lab
Rocket LabNASDAQ: RKLB: Designs and builds launch vehicles and satellite systems.
8+ YOEDegree in mechanical/aerospace/mechatronics/robotics,8+ years mechanical engineering experience with leadership,proven spaceflight/high-reliability hardware delivery,SolidWorks proficiency,and hands-on assembly/test experience.
SolidWorks
1mo
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Mechanical Engineering Manager
Irvine, California, United States
$150k-$180k/yr OnsiteFull Time
Staco Systems
Staco Systems: Manufactures human-machine interface products for aerospace and defense.
3+ YOE3+ MgmtBachelor's in Mechanical Engineering, 3+ years engineering management, experience onboarding/training staff, familiarity with Mil Standards and project management, technical problem solving, ability to lift/push up to 50 lbs, U.S. work authorization required.
3w
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Senior Manager, Mechanical Engineering
Irvine, California, United States
$191k-$253k/yr OnsiteFull Time
Anduril Industries
Anduril Industries: Defense technology building autonomous military hardware and software.
8+ YOE8+ years mechanical/electromechanical design experience with engineering management; BS in Mechanical Engineering; 3D CAD and GD&T proficiency; experience with production processes; eligible for U.S. Secret clearance.
Lattice OS, 3D CAD, GD&T, NX, Teamcenter
6d
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Director, Mechanical Engineering
Los Angeles, California, United States
OnsiteFull Time
Observable Space
Observable Space: Developing integrated hardware and software for persistent space observation.
10+ YOE10+ years designing complex mechanical systems, experience leading teams, bachelor\u0002s in mechanical/aerospace engineering, proficiency with CAD, FEA, GD&T, tolerance and DFM/DFA, and experience through prototype to production.
SolidWorks, Siemens NX, FEA, GD&T
3w
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Manager, Mechanical Engineering
Pasadena, California, United States
$142k-$189k/yr OnsiteFull Time
Rocket Lab
Rocket LabNasdaq: RKLB: Operates launch vehicles and manufactures satellites for space missions.
8+ YOEDegree in Mechanical/Aerospace/Mechatronics/Robotics,8+ years mechanical engineering experience delivering high-reliability or spaceflight hardware,management experience,SolidWorks proficiency,and hands-on design, test, and integration skills.
SolidWorks
6d
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Manager, Launch Mechanical Engineering
Long Beach, California, United States
$150k-$224k/yr OnsiteFull Time
Relativity Space
Relativity Space: Designing and manufacturing 3D-printed rockets and launch vehicles.
5+ YOE1+ MgmtBachelor's in mechanical/aerospace engineering, 5+ years engineering experience in launch/ground systems, 1+ year managing engineers, strong structures/mechanical/fluid skills, schedule and risk management, mentoring and communication.
2mo
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Mechanical EIT - Building Engineering
Irvine, California, United States
$71k-$101k/yr OnsiteFull Time
HDR
HDR: Global firm providing architecture, engineering, and environmental services.
4+ YOEBachelor's degree in Mechanical Engineering; Engineer in Training (EIT) certificate; 4+ years HVAC/plumbing experience; proficiency in AutoCAD and MS Office; experience in healthcare design a plus.
MS Office, AutoCAD, Trace 3D, IESVE
1w
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Director of Mechanical Engineering (Building Systems)
Charlotte or King of Prussia or Scottsdale or Frisco or Bellevue or Roseville or Richland or Puyallup or Klamath Falls or Chehalis or Long Beach or Kent or Remote or Philadelphia or Burlington or Bentonville or Minneapolis or Ontario or Somerville or West Chester or Tampa or Hillsboro or Naperville or Duluth or Saint Louis
$160k-$220k/yr HybridFull Time
Core States Group
Core States Group: Integrated architectural, engineering, and construction services for businesses.
15+ YOE8+ MgmtBachelor's in Mechanical Engineering, PE required, 15+ years A/E/C mechanical engineering program/project experience, 8+ years supervising, commercial program experience, MS Office required, AutoCAD/Revit preferred.
Microsoft Office, AutoCAD, Revit
3mo
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Mechanical Engineering - Part-Time Lecturer Pool
Fullerton, California, United States
$6k-$7k/mo OnsitePart Time, Temporary
California State University
California State University: Public university system providing higher education and academic research.
2+ YOEMS in Mechanical Engineering or BS with 2+ years industry experience; ability to teach, online teaching skills, and work with diverse students
23h
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Mechanical Engineering Intern / Co-op, Rocket Motors - Fall 2026
Torrance or Los Angeles or Mojave
$25-$40/hr OnsiteMultiple Commitments Available
GITAI
GITAI: Developing autonomous robotic systems for labor in space.
1+ YOECurrently enrolled in a bachelor's or master's engineering program, with 1+ year of hands-on student engineering projects, hardware development experience, 3D CAD and drawing skills, and U.S. work authorization.
3D CAD, SolidWorks, GD&T
1w
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Mechanical Engineer
Rialto, California, United States
$85k/yr OnsiteFull Time
Winpak
WinpakToronto Stock Exchange: WPK: Manufacturer of high-quality packaging materials and innovative machinery.
3+ YOEBachelor's in Mechanical Engineering, 3+ years mechanical/equipment design experience, SolidWorks/Autodesk and MS Office proficiency, blueprint reading, mechanical design and manufacturing experience.
SolidWorks, Autodesk, Microsoft Word, Microsoft Excel, Microsoft PowerPoint
1d
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Mechanical Engineer
Los Angeles, California, United States
$110k-$130k/yr HybridFull Time
Tetra Tech
Tetra TechNASDAQ: TTEK: Global provider of high-end consulting and engineering services.
5+ YOEEIT required, Bachelor's in Mechanical Engineering, 5+ years mechanical engineering/design experience in AEC, US work authorization required, PE preferred, Revit and Bluebeam experience, HVAC calculation proficiency.
Revit, Bluebeam
2mo
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Mechanical Engineer
Irvine, California, United States
$110k-$124k/yr OnsiteFull Time
Neon Aero: Designs and builds AI-native aerospace hardware and flight systems.
4+ YOE4+ years in mechanical product development; Bachelor's in Mechanical Engineering or related field preferred; Siemens NX proficiency; GD&T; production release experience
Siemens NX, GD&T, MATLAB, Python
2mo
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Mechanical Engineer
Pasadena, California, United States
OnsiteFull Time
Caltech
Caltech: Provides university-level education and scientific research services.
6+ YOEB.S. in Mechanical Engineering or equivalent plus 6+ years of experience with independent design responsibility.
SolidWorks, FEA, GD&T, PDM, ANSYS, ZEMAX, CODE V
2w
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Associate, Mechanical Engineering Lead - Central Plants & District Energy in Los Angeles, California, United States
Los Angeles or San Diego or Oakland or Seattle or San Francisco
$147k-$190k/yr OnsiteFull Time
Arup
Arup: Global engineering and design consultancy for the built environment.
12+ YOEBachelor's in mechanical/architectural engineering, US PE license required, 12+ years designing HVAC central plants and hydronic/district energy systems, client-facing experience, team leadership; LEED/WELL and energy modeling preferred.
1mo
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Mechanical Engineer
Chicago or Pasadena
$107k-$161k/yr OnsiteFull Time
Stantec
StantecToronto Stock Exchange / New York Stock Exchange: STN: Global design, engineering, and environmental consulting firm.
7+ YOEBachelor's in mechanical engineering, PE licensure (NCEES record-ready), minimum 7 years' mechanical/HVAC/plumbing design experience, proficiency with HAP or Trace, AutoCAD and Revit, strong communication and project leadership skills.
HAP, Trace, AutoCAD, Revit
2mo
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Mechanical Engineer
Irvine or Los Angeles
OnsiteFull Time
HDR
HDR: Global provider of engineering, architecture, environmental and construction services.
6+ YOEBachelor's in Mechanical Engineering, PE license required for the job location, experience in mechanical/plumbing system design for commercial or institutional buildings, proficiency with Microsoft Office and Trane TRACE; master's preferred and 6+ years experience desired.
Microsoft Office, Trane TRACE
2mo
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Senior Mechanical Engineer
Tustin, California, United States
$140k-$200k/yr HybridFull Time
Salas O'Brien
Salas O'Brien: Provides integrated engineering design and technical consulting services.
10+ YOEBachelor’s in Mechanical Engineering; 10+ years in mechanical systems design/management; client engagement; PE preferred.
Revit, Navisworks, Energy Soft, Trace energy modeling
1w
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Mechanical Engineer
Camarillo or Los Angeles
$85k-$110k/yr OnsiteFull Time
Allient
AllientNASDAQ: ALNT: Manufacturer of precision motion control and power quality systems.
5+ YOEBachelor's in Engineering required; 5+ years mechanical engineering experience; SolidWorks and GD&T proficiency; experience with BLDC motors, tooling and product design; able to manage projects and interface with vendors/customers.
SolidWorks, 3D printing, GD&T